CBSE Class 11-science Answered
Find the resultant and the direction of resultant of two vectors A and B with angle
between them
![question image](http://images.topperlearning.com/topper/new-ate/61843613.png)
Asked by neerajchauhan000000 | 23 Sep, 2021, 15:33: PM
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/c4fabe17db27e42d975d08376c158d22614ccfdb537649.24619366f2.png)
Figure shows two vectors a and b . Let θ be the angle between vectors.
By law of parallelogram, resultant vector (a+b) is the diagaonal of the parallelogram
formed by the vectors a and b as sides as shown in figure.
Magnitude of resultant (a+b) is determined using law of cosines using the triangle
formed by vector a , vector b and the resultant (a+b)
![begin mathsize 14px style open vertical bar a plus b close vertical bar space equals space square root of open vertical bar a close vertical bar squared plus open vertical bar b close vertical bar squared space minus space 2 space open vertical bar a close vertical bar space open vertical bar b close vertical bar space cos left parenthesis 180 minus theta right parenthesis end root end style](https://images.topperlearning.com/topper/tinymce/cache/45098d86a4831c5a5594fe29f3377452.png)
![begin mathsize 14px style open vertical bar a plus b close vertical bar space equals space square root of open vertical bar a close vertical bar squared plus open vertical bar b close vertical bar squared space plus space 2 space open vertical bar a close vertical bar space open vertical bar b close vertical bar space cos theta end root end style](https://images.topperlearning.com/topper/tinymce/cache/069f826f739d0a9e8f58c68ef0e6a9a7.png)
Answered by Thiyagarajan K | 24 Sep, 2021, 00:55: AM
Concept Videos
CBSE 11-science - Physics
Asked by contact.asmita03 | 15 Jun, 2024, 11:51: AM
CBSE 11-science - Physics
Asked by dwivediayam2612 | 04 Jun, 2024, 20:46: PM
CBSE 11-science - Physics
Asked by vinitdubey7735 | 14 Mar, 2024, 11:21: AM
CBSE 11-science - Physics
Asked by dhanshreekansyakar | 09 Jan, 2024, 11:57: AM
CBSE 11-science - Physics
Asked by banhisikhapanda49 | 07 Nov, 2023, 22:42: PM
CBSE 11-science - Physics
Asked by preethiprithivi05 | 21 Feb, 2023, 21:28: PM
CBSE 11-science - Physics
Asked by rk274268 | 05 Aug, 2022, 13:19: PM
CBSE 11-science - Physics
Asked by Kattaithihaas | 24 Jul, 2022, 13:23: PM